POLICY AND CHARGING CONTROL METHOD SUPPORTING IP FLOW MOBILITY IN ROAMING SCENARIO

摘要

A policy and charging control method for supporting IP flow mobility in a roaming scenario includes: when a Visited Policy and Charging Rules Function (V-PCRF) receives IP flow mobility routing rule information reported by a Policy and Charging Enforcement Function (PCEF), and if a Home Policy and Charging Rules Function (H-PCRF) subscribes IP-CAN type change (IP-CAN_CHANGE) event trigger or access node gateway change (AN_GW_CHANGE) event trigger, the V-PCRF reporting the IP flow mobility routing rule information to the H-PCRF. With the present method, a visited network can execute the IP flow mobility locally, or compared with a method in which an interaction with the H-PCRF is required at any time, signaling overhead between the V-PCRF and the H-PCRF can be saved.